/* This file is part of Sawa, the Scriptic-Java compiler
 * Copyright (C) 2009 Andre van Delft
 *
 * Sawa is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package scriptic.tools;

import java.io.*;

class CatchBlock extends TryOrCatchBlock {
   public LocalVariableDeclaration  catchVariable;
   public int languageConstructCode () {return CatchBlockCode;}
   public boolean catchesAnything; // should not remain false, else error
   /** return 0 if this can't catch the given throwable
    *  return 1 if it may or may not catch it
    *  return 2 if it allways catches it
    */
   public int wantsToCatch (CompilerEnvironment env, DataType throwable) throws IOException, CompilerError {
       if (throwable.isSubtypeOf (env,catchVariable.dataType())) {catchesAnything=true; return 2;}
       if (catchVariable.dataType().isSubtypeOf (env,throwable)) {catchesAnything=true; return 1;}
       return 0;
   }
}

